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Lady bird [3.3K]
3 years ago
14

Solve for -- = ၅ A - - 2 5 --23 2 € I- . N . 1:21 2

Mathematics
1 answer:
fredd [130]3 years ago
8 0

Answer:

C

Step-by-step explanation:

x =  (- b +   -   \sqrt{ {b}^{2} - 4ac } ) \div 2

x1 =  (- ( - 1) -  \sqrt{ {( - 1)}^{2} - 4 \times (1) \times ( - 3) }) \div 2  =  \\( 1  -   \sqrt{1 + 12}) \div 2  = (1  -   \sqrt{13} )\div 2

x1 = ( - ( - 1)  +   \sqrt{ {( - 1)}^{2} - 4 \times (1) \times ( - 3) }) \div 2  =  \\( 1 +  \sqrt{1 + 12}  ) \div 2=( 1 +  \sqrt{13} ) \div 2

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For each of the following numbers, write 4 decimals that would round to this whole number when rounde to the nearest whole numbe
FromTheMoon [43]
Round to the nearest whole number:

a) 14 ⇒ 13.5 ; 13.9 ; 14.1 ; 14.4
b) 28 ⇒ 27.5 ; 27.9 ; 28.1 ; 28.4
c) 32 ⇒ 31.5 ; 31.9 ; 32.1 ; 32.4
d) 50 ⇒ 49.5 ; 49.9 ; 50.1 ; 50.4
e) 67 ⇒ 66.5 ; 66.9 ; 67.1 ; 67.4
f) 71 ⇒ 70.5; 70.9 ; 71.1 ; 71.4
g) 88 ⇒ 87.5; 87.9 ; 88.1 ; 88.4
h) 95 ⇒ 94.5; 94.9 ; 95.1 ; 95.4

If the following number is within the range of 1 to 4 then round down.
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If 15% of 200 apples are bad, haw many apples are bad? (Please include explanation)
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brainly.com/question/16608196

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vitfil [10]

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\textbf{ \underline{Using identity: }} \underline{ {(a  -  b)}^{2}  =  {a}^{2}  - 2ab +  {b}^{2} }\\  \\  {x}^{2}  - 10x + 25 \\  = {(x)}^{2} - 2 \times 5 \times x +   {(5)}^{2}  \\ =  {(x - 5)}^{2}
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